code: def test_basic_lineplot_rangetool(df_stock):
      """Test for basic lineplot above with a rangetool extension"""
  
      p_basic_lineplot_accessor_pandas_backend = df_stock.plot.line(
          show_figure=False, rangetool=True
      )
  
      # Output plot as HTML:
      pandas_bokeh.output_file(
          os.path.join(
              DIRECTORY, "Plots", "Basic_lineplot_rangetool.html"
          )
      )
      pandas_bokeh.save(p_basic_lineplot_accessor_pandas_backend)
  
      assert True
  
imports: import os
  import numpy
  import pandas
  import pytest
  import pandas_bokeh
label_desc: Use image node_id 9 for calling a global function with example usage: test_basic_lineplot_rangetool(df_stock) without return types